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DeIonizedPlasma

60 karma · joined March 23, 2017

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DeIonizedPlasma··on Hiroshima fallout debris linked to first solar system condensates
You know we tested fusion bombs as early as the 50s? They've been around quite a while. Also, very few reactors use lasers. The laser system at NIF is actually entirely meant to physically emulate what fusion bombs are like without having to build one and set it off. Reactors typically use magnetic fields instead of lasers, because the approach is much more scalable to things like power generation.
DeIonizedPlasma··on Electronic Structure of LK-99
The nitter video could literally be a piece of iron, even a ferromagnetic object will turn like that under the presence of a magnet. It certainly isn't proof that the thing they have there is NOT a superconductor, but you can't use that video as evidence of anything.
DeIonizedPlasma··on Ask HN: Why is news about fusion ignition not a bigger deal in popular media?
Laser ICF is not ever going to be applicable to power generation. NIF is first and foremost a weapons research facility, and the primary reason NIF exists is to investigate plasma in regimes similar to the core of a detonating H-Bomb. The ignition results are nice and might provide some useful new experimental data on the behavior of ignited plasmas, but ultimately this has very little bearing on the future of fusion energy. In order to get useful energy out of laser confinement, we would need to do about 1 shot every second. Currently, the hohlraum (fuel pellet) is made of diamond and gold, machined to sub-picometer precision. Beyond the fact that it takes much, MUCH longer to charge up the systems for a shot, you'd need to find a way to manufacture these extremely expensive pellets en masse, load them into the chamber, fire, capture the energy, and also design your chamber to not fall apart after a few dozen shots from ablation.

You should be getting very excited when any of the magnetic fusion approaches achieve ignition, because unlike ICF they are much more straightforward to scale and capture energy from.

DeIonizedPlasma··on “You don't have a voltmeter. Do you have a potato?”
Copper salts are green. The copper will only give up an electron and make itself available to form salts with the ions in the potato at the positive electrode. This should also work with anything else conductive, you'd probably be able to tell doing this in a glass of salt water provided that the water is still enough.
DeIonizedPlasma··on More invested in nuclear fusion in last 12 months than past decade
59MJ over the short period of 7s, equivalent to 8.5 MW (https://www.iter.org/newsline/-/3722). A research reactor (not built to be a power plant) that is still capable of powering over 20,000 households while running isn't really as underwhelming as you seem to imply it is.